Abstract:
An agricultural harvester includes a first power unit and a second power unit. The first power unit is couplable with a first primary load, including a threshing system load. A first temperature sensor associated with the first power unit provides a first output signal. A second temperature sensor associated with the second power unit provides a second output signal. A first motor/generator is mechanically coupled with the first power unit, and a second motor/generator is mechanically coupled with the second power unit. The second motor/generator and the first motor/generator are electrically coupled together. At least one electrical processing circuit is coupled with the first temperature sensor, second temperature sensor, first motor/generator and second motor/generator. The at least one electrical processing circuit is configured for selective bidirectional transfer of electrical power between the first motor/generator and the second motor/generator, dependent on the first output signal and the second output signal.
Abstract:
An engine combustion air pre-cleaner includes a body shaped for effecting cyclonic air flow between an inlet and an outlet of the body. Located along a longitudinal axis of the body is a conical throttling member which is coupled to a control device which operates in response to increasing engine load, as represented by increasing boost pressure, torque and/or speed, to shift the throttling member so as to cause an increasing air flow with increasing engine load.
Abstract:
An agricultural vehicle including plurality of engines, a plurality of mechanical loads, a plurality of electrical generators, a plurality of electrical loads, at least one load sensor, and a controller. The plurality of engines includes a first engine and a second engine. The plurality of mechanical loads includes a first mechanical load and a second mechanical load. The first mechanical load is coupled to the first engine and a second mechanical load is coupled to the second engine. The plurality of electrical generators includes a first generator and a second generator. The first generator is coupled to the first engine and the second generator is coupled to the second engine. The plurality of electrical loads can be separately coupled to the first generator or the second generator. The at least one load sensor is configured to produce a signal representative of the first mechanical load on the first engine, the second mechanical load on the second engine, a sum of electrical loads on the first generator, and/or a sum of electrical loads on the second generator. The controller is configured to shift at least one of the plurality of electrical loads between the first generator and the second generator dependent upon the signal.
Abstract:
A method and system for boosting a torque output of a drive train comprises a torque sensor for detecting an engine torque of an engine having a baseline torque versus engine speed curve. A data processor determines if the detected engine torque is within a first torque range, if the detected engine torque is within the first range, the electric motor is activated to rotate substantially synchronously with a corresponding engine speed associated with the detected engine torque in accordance with a supplemental torque versus engine speed curve. The supplemental torque versus engine speed curve intercepts the baseline torque versus engine speed curve at a first lower speed point and a first higher speed point.
Abstract:
A method and system for boosting a torque output of a drive train comprises a torque sensor for detecting an engine torque of an engine having a baseline torque versus engine speed curve. A data processor determines if the detected engine torque is within a first torque range, if the detected engine torque is within the first range, the electric motor is activated to rotate substantially synchronously with a corresponding engine speed associated with the detected engine torque in accordance with a supplemental torque versus engine speed curve. The supplemental torque versus engine speed curve intercepts the baseline torque versus engine speed curve at a first lower speed point and a first higher speed point.
Abstract:
An internal combustion engine includes an exhaust gas recirculation (EGR) system. The EGR system includes an air-to-gas EGR cooler, an air inlet line communicating cooling inlet air to the EGR cooler, an EGR supply line communicating exhaust to the EGR cooler, a venturi in the exhaust circuit, and an air outlet line communicating heated air from the EGR cooler to the venturi. Flow of exhaust through the venturi draws cooling air through the EGR cooler. The EGR system also includes a turbocharger having an exhaust turbine and an inlet air compressor. A compressor outlet circuit communicates air from the compressor to an engine air intake. A valve is located in the compressor outlet circuit. An EGR venturi in the compressor outlet circuit is connected in parallel with the valve. A cooled EGR line communicates cooled exhaust from the EGR cooler to a suction port of the EGR venturi.
Abstract:
In a cooling package for use in an agricultural combine, a subassembly comprises a radiator and a charge air cooler, with a metal-to-metal seal between the radiator and the charge air cooler, thereby eliminating gaps and preventing air from bypassing cooling cores. A cooling package includes a frame having a flange, a subassembly of a radiator and a charge air cooler being sealingly mounted into the frame and against the flange. A method of manufacturing a cooling package comprises providing a frame having an inner flange, providing a radiator, providing a charge air cooler, connecting the radiator to the charge air cooler to form a subassembly, and mounting the subassembly into the frame to seal against the flange.
Abstract:
Duct work directing air from a combine cooling fan to the top of a separator unit, the duct work extending in an arc between its inlet and a flared outlet, and includes a neck portion that hinders air within the duct work from swirling upward in that location.